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Update fixed seed test 

Use random seed and allow test reruns to pass the sampler.
This commit is contained in:
aherbert 2022-10-13 11:00:09 +01:00
parent 8dfca662fc
commit bc9e8bd272
1 changed files with 5 additions and 5 deletions
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10
commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/distribution/EnumeratedRealDistributionTest.java
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@ -169,7 +169,7 @@ public class EnumeratedRealDistributionTest {
public void testSample() {
final int n = 1000000;
final ContinuousDistribution.Sampler sampler =
testDistribution.createSampler(RandomSource.WELL_1024_A.create(-123456789));
testDistribution.createSampler(RandomSource.XO_RO_SHI_RO_128_PP.create());
final double[] samples = AbstractRealDistribution.sample(n, sampler);
Assert.assertEquals(n, samples.length);
double sum = 0;
@ -178,10 +178,10 @@ public class EnumeratedRealDistributionTest {
sum += samples[i];
sumOfSquares += samples[i] * samples[i];
}
Assert.assertEquals(testDistribution.getMean(),
sum / n, 1e-2);
Assert.assertEquals(testDistribution.getVariance(),
sumOfSquares / n - JdkMath.pow(sum / n, 2), 1e-2);
final double mean = testDistribution.getMean();
Assert.assertEquals("Mean", mean, sum / n, mean * 1e-2);
final double var = testDistribution.getVariance();
Assert.assertEquals("Variance", var, sumOfSquares / n - JdkMath.pow(sum / n, 2), var * 1e-2);
}
@Test